Application of intelligent switch and intelligent fuzzy controller in reheated steam temperature system of power plants

An intelligent fuzzy controller is designed for the controlled objects which have the characteristics of time-delay nonlinear and variable parameters. The controller is composed of mindlike intelligent integral and two-dimensional fuzzy control. A regulating device is proposed for the valves that are always out of control. The device has the structure of a double-loop cascade control system and can realize intelligent switching. A number of simulations and practical applications show that the intelligent switch and intelligent fuzzy cascade reheated steam temperature control system which are configured and realized by using the CLC-04 programmable regulator have better controllability, anti-jamming, and robustness than that of a PID cascade system and a robust state-feedback cascade system.